直接写得数: × = | ÷ = | ÷3= | + = |
×9× = | 1- ÷ = | 1- = | 1000×10%×100%= |
× = , | ÷ =2, | ÷3= , | + = , |
×9× =2, | 1- ÷ =0, | 1- = , | 1000×10%×100%=100. |
,2,
,
,2,0,
,100.分析:根据分数的加减乘除法和百分数的乘法的计算方法进行计算即可.
点评:口算时,注意运算符号和运算数据,然后再进行计算,能简算的要简算.
编辑:chaxungu时间:2026-04-26 08:43:42分类:小学数学题库
直接写得数: × = | ÷ = | ÷3= | + = |
×9× = | 1- ÷ = | 1- = | 1000×10%×100%= |
× = , | ÷ =2, | ÷3= , | + = , |
×9× =2, | 1- ÷ =0, | 1- = , | 1000×10%×100%=100. |
,2,
,
,2,0,
,100.